BACKGROUND AND AIMS: There is evidence that distinct genetic polymorphisms of LRP5 are associated with low Bone Mineral Density (BMD) and the risk of fracture. However, relationships between LRP5 polymorphisms and micro- and macro architectural bone characteristics assessed by pQCT have not been studied. The aim of the present study was to investigate the association of Ala1330Val and Val667Met polymorphisms in LRP5 gene with volumetric BMD (vBMD) and macro-architectural bone parameters in a population-based sample of men and women. METHODS: We studied 959 participants of the InCHIANTI study (451 men and 508 women, age range: 21-94 yrs). Trabecular vBMD (vBMDt, mg/cm3), cortical vBMD (vBMDc, mg/cm3), cortical bone area (CBA, mm2) and cortical thickness (Ct.Th, mm) at the level of the tibia were assessed by peripheral quantitative computed tomography (pQCT). Ala1330Val and Val667Met genotypes were determined on genomic DNA by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). RESULTS: In age-adjusted analyses both LRP 1330-valine and LRP 667-metionin variants were associated with lower vBMDt in men (p<0.05), and lower vBMDt (p<0.05), Ct.Th (p<0.05) and CBA (p<0.05) in women. After adjusting for multiple confounders, only the association of LRP5 1330-valine and 667-metionin with CBA remained statistically significant (p=0.04 and p=0.01, respectively) in women. CONCLUSION: These findings suggest that both Ala1330Val and Val667Met LRP5 polymorphisms may affect the determination of geometric bone parameters in women.
BACKGROUND AND AIMS: There is evidence that distinct genetic polymorphisms of LRP5 are associated with low Bone Mineral Density (BMD) and the risk of fracture. However, relationships between LRP5 polymorphisms and micro- and macro architectural bone characteristics assessed by pQCT have not been studied. The aim of the present study was to investigate the association of Ala1330Val and Val667Met polymorphisms in LRP5 gene with volumetric BMD (vBMD) and macro-architectural bone parameters in a population-based sample of men and women. METHODS: We studied 959 participants of the InCHIANTI study (451 men and 508 women, age range: 21-94 yrs). Trabecular vBMD (vBMDt, mg/cm3), cortical vBMD (vBMDc, mg/cm3), cortical bone area (CBA, mm2) and cortical thickness (Ct.Th, mm) at the level of the tibia were assessed by peripheral quantitative computed tomography (pQCT). Ala1330Val and Val667Met genotypes were determined on genomic DNA by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). RESULTS: In age-adjusted analyses both LRP 1330-valine and LRP 667-metionin variants were associated with lower vBMDt in men (p<0.05), and lower vBMDt (p<0.05), Ct.Th (p<0.05) and CBA (p<0.05) in women. After adjusting for multiple confounders, only the association of LRP5 1330-valine and 667-metionin with CBA remained statistically significant (p=0.04 and p=0.01, respectively) in women. CONCLUSION: These findings suggest that both Ala1330Val and Val667Met LRP5 polymorphisms may affect the determination of geometric bone parameters in women.
Authors: Anne-Marie Sims; Neil Shephard; Kim Carter; Tracy Doan; Alison Dowling; Emma L Duncan; John Eisman; Graeme Jones; Geoffrey Nicholson; Richard Prince; Ego Seeman; Gethin Thomas; John A Wass; Matthew A Brown Journal: J Bone Miner Res Date: 2008-04 Impact factor: 6.741
Authors: Y Gong; R B Slee; N Fukai; G Rawadi; S Roman-Roman; A M Reginato; H Wang; T Cundy; F H Glorieux; D Lev; M Zacharin; K Oexle; J Marcelino; W Suwairi; S Heeger; G Sabatakos; S Apte; W N Adkins; J Allgrove; M Arslan-Kirchner; J A Batch; P Beighton; G C Black; R G Boles; L M Boon; C Borrone; H G Brunner; G F Carle; B Dallapiccola; A De Paepe; B Floege; M L Halfhide; B Hall; R C Hennekam; T Hirose; A Jans; H Jüppner; C A Kim; K Keppler-Noreuil; A Kohlschuetter; D LaCombe; M Lambert; E Lemyre; T Letteboer; L Peltonen; R S Ramesar; M Romanengo; H Somer; E Steichen-Gersdorf; B Steinmann; B Sullivan; A Superti-Furga; W Swoboda; M J van den Boogaard; W Van Hul; M Vikkula; M Votruba; B Zabel; T Garcia; R Baron; B R Olsen; M L Warman Journal: Cell Date: 2001-11-16 Impact factor: 41.582
Authors: Paul M Mayhew; C David Thomas; John G Clement; Nigel Loveridge; Thomas J Beck; William Bonfield; Chris J Burgoyne; Jonathan Reeve Journal: Lancet Date: 2005 Jul 9-15 Impact factor: 79.321
Authors: Fulvio Lauretani; Stefania Bandinelli; Michael E Griswold; Marcello Maggio; Richard Semba; Jack M Guralnik; Luigi Ferrucci Journal: J Bone Miner Res Date: 2008-03 Impact factor: 6.741
Authors: Joyce B J van Meurs; Thomas A Trikalinos; Stuart H Ralston; Susana Balcells; Maria Luisa Brandi; Kim Brixen; Douglas P Kiel; Bente L Langdahl; Paul Lips; Osten Ljunggren; Roman Lorenc; Barbara Obermayer-Pietsch; Claes Ohlsson; Ulrika Pettersson; David M Reid; Francois Rousseau; Serena Scollen; Wim Van Hul; Lidia Agueda; Kristina Akesson; Lidia I Benevolenskaya; Serge L Ferrari; Göran Hallmans; Albert Hofman; Lise Bjerre Husted; Marcin Kruk; Stephen Kaptoge; David Karasik; Magnus K Karlsson; Mattias Lorentzon; Laura Masi; Fiona E A McGuigan; Dan Mellström; Leif Mosekilde; Xavier Nogues; Huibert A P Pols; Jonathan Reeve; Wilfried Renner; Fernando Rivadeneira; Natasja M van Schoor; Kurt Weber; John P A Ioannidis; André G Uitterlinden Journal: JAMA Date: 2008-03-19 Impact factor: 56.272
Authors: C Cepollaro; F Lauretani; A Gozzini; L Masi; A Falchetti; F Del Monte; S Carbonell-Sala; A Tanini; A M Corsi; S Bandinelli; L Ferrucci; M L Brandi Journal: Calcif Tissue Int Date: 2007-05-16 Impact factor: 4.333